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kirza4 [7]
3 years ago
14

Is 1+4(3-10)-12x equivalent to -9

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

No (not sure though)

Step-by-step explanation:

1+4(3-10)-12x

1+4(-7)-12x

1+(-28)-12x

-27-12x

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Vikentia [17]
The solution is:A mole of gas occupies 22.4 L A liter is 1000 cubic centimeters because 1 cubic centimeter = 1 mL
One Helium molecule (essentially one helium atom) has atomic mass 4 g/mol So for every 22400 cubic centimeters of volume, we have 4 grams of helium Density of helium = 4g / 22400 cm^3 = 1g / 5600 cm^3 
Volume of a sphere = (4/3)(pi)r^3 Volume of the outside sphere (the entire sphere) is (4/3)(pi)(R+T)^3 Volume of the inside sphere (the hollow region) is (4/3)(pi)R^3 
The difference for the volume of silver. (4/3)(pi)(R+T)^3 - (4/3)(pi)R^3 = (4/3)(pi)(3R^2T + 3RT^2 + T^3) 
The density of silver is 10.5g/cm^3 
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Now for the mass of helium: volume x density = (4/3)(pi)R^3 (1/5600) = (pi/4200)R^3 

Set the two masses equal: (pi/4200)R^3 = (14pi)T(3R^2 + 3RT + T^2) R^3 = 58800*T(3R^2 + 3RT + T^2) R / T = 58800*(3R^2 + 3RT + T^2) / R^2 = 58800*( 3+T/R^2+(T/R)^2) 
then solve for xx = T / R 1/x = 58800*( 3+x/R+x^2) 1/58800 = x (3 + x/R + x^2) 1/58800 = 3x + x^3 x^3 + 3x - 1/58800= 0 x = ~ 5.66893x10^(-6)
6 0
3 years ago
The population of a city increases by 5% every year. If it’s population today is 300,000 what will it’s population be in 2 years
disa [49]

Answer:

Population after n years = Present Population =(1+

100

r

​

)

n

Population after 2 years =50000(1+

100

5

​

)

2

=50000(

100

105

​

)

2

=50000×

100

105

​

×

100

105

​

=5×105×105=55125

Step-by-step explanation:

6 0
2 years ago
If x:y = 2:5, find the value of (-x+3y):(2x+y)
Anit [1.1K]

Answer:

let x=2t and y=5t

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6 0
2 years ago
I need to find the angles of A and B. From what I know, they should be congruent, but I've been stuck for wayyyy to long.​
ANTONII [103]

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8 0
2 years ago
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Mila [183]

Answer: There are 25 FTEs.

Step-by-step explanation:

Since we have given that

Number of hour week for full time employee = 40 hours

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40\times 4\\\\=160\ hours

If in last month, the hotel's 80 employees worked a total of 4000 hours,

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\dfrac{4000}{160}\\\\=25

Hence, there are 25 FTEs.

7 0
3 years ago
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